A Poletec test subject refers to a Poletec individual who was seized by the Techno Union and subsequently utilized for experimental purposes. Wat Tambor, who held the position of Foreman within the Techno Union, subjected this particular Poletec to testing with the Decimator, resulting in the complete vaporization of the individual.
In the final iteration of "On the Wings of Keeradaks" from The Clone Wars TV series's return, this Poletec was absent, because the Decimator wasn't used on anyone.